WO2018163796A1

WO2018163796A1 - Terminal device for electric equipment and method for manufacturing terminal device for electric equipment

Info

Publication number: WO2018163796A1
Application number: PCT/JP2018/005878
Authority: WO
Inventors: 知聖金; 中嶋　一雄; 満廣瀬
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2017-03-07
Filing date: 2018-02-20
Publication date: 2018-09-13
Also published as: US10673177B2; CN110383598A; JP2018147791A; US20200059036A1

Abstract

This terminal device 100 for electric equipment is provided with: a housing 11 having a fitting part 12 that can be fitted into a mating member; a receiving groove 14 that is disposed on an end surface 11a of the housing 11 and provided around the fitting part 12, the end surface 11a facing the mating member; and an annular seal member 13 provided in the receiving groove 14, and sealing the space between the end surface 11a of the housing 11 and the mating member in a watertight manner. As the seal member 13, a liquid gasket is filled in the receiving groove 14.

Description

ELECTRIC DEVICE TERMINAL DEVICE AND METHOD FOR PRODUCING ELECTRIC DEVICE TERMINAL DEVICE

The present invention relates to a terminal device for electrical equipment and a method for manufacturing a terminal device for electrical equipment.

In recent vehicles such as electric vehicles and hybrid vehicles, various electric devices are electrically connected by a wire harness or the like (see, for example, Patent Document 1). FIG. 3 shows an example of a terminal block to which the connector of the wire harness is connected. For example, the terminal block 1 is attached to an electric device mounted on a vehicle.

Many terminal pins 2 are arranged on the terminal block 1. When the connector of the wire harness is fitted to the terminal block 1, the male pin 2 is fitted to the female pin of the connector.

An annular rubber packing 3 is attached around the male pin terminal 2 as a seal member. Support pieces 4 are integrally molded at a plurality of locations on the outer periphery of the rubber packing 3, and attachment holes 5 are formed in the support pieces 4.

When the fixing pin 6 formed on the terminal block 1 is inserted into the mounting hole 5, the rubber packing 3 is held by the terminal block 1, so that the electric packing can be removed from the terminal block of the rubber packing 3 during transportation or assembly work. Dropping is prevented.

In addition, when the connector is attached to the terminal block 1, the rubber packing 3 is sandwiched between the terminal block 1 and the case edge of the connector to ensure watertightness inside and outside the connector case.

JP 2011-187224 A

In the terminal block 1 as described above, in order to hold the rubber packing 3, the fixing pin 6 is inserted into the support piece 4 extending to the outer peripheral side of the rubber packing 3. Therefore, since it is necessary to form the fixing pins 6 around the rubber packing 3, the outer diameter dimension of the terminal block 1 and the outer dimension of the casing of the electric device to which the terminal block 1 is attached are increased.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a terminal device for electrical equipment that can be miniaturized.

An electric equipment terminal device that solves the above problems is provided on a housing having a fitting portion that can be fitted to a mating member, and on an end surface of the housing facing the mating member side, around the fitting portion. And an annular seal member that is provided in the accommodation groove and seals between the end surface of the housing and the mating member in a watertight manner. As the seal member, a liquid gasket is provided in the accommodation groove. It is characterized by filling.

∙ With this configuration, the housing and the mating member are hermetically sealed with a liquid gasket. Here, since the liquid gasket has higher adhesiveness and adhesiveness than the rubber packing, the sealing member can be fixed to the housing without providing a fixing structure such as a fixing pin. Thereby, the terminal device for electric equipment can be reduced in size.

Moreover, in the terminal device for electric equipment described above, it is preferable that the bottom surface of the housing groove is provided with irregularities.
With this configuration, the liquid gasket is held in the receiving groove while being in close contact with and engaging with the irregularities on the bottom surface of the receiving groove.

In the terminal device for electrical equipment, it is preferable that a large number of concave stripes or a large number of protrusions are continuously formed as the irregularities.
With this configuration, the liquid gasket is held in the receiving groove while being in close contact with and engaging with the numerous concaves and protrusions on the bottom surface of the receiving groove.

In the terminal device for electrical equipment, it is preferable to form a large number of protrusions or a large number of recesses as the unevenness.
With this configuration, the liquid gasket is held in the receiving groove while being in close contact with and engaged with the numerous protrusions or the numerous recesses on the bottom surface of the receiving groove.

A method for manufacturing a terminal device for an electrical device that solves the above-described problem is provided on an end surface facing a mating member side of a housing having a fitting portion that can be fitted to a mating member, and is annularly accommodated around the fitting portion. It is preferable to provide a groove, fill the receiving groove with a liquid gasket, and irradiate the surface of the liquid gasket with ultraviolet rays to cure the surface.

This method hardens the surface of the liquid gasket filled in the housing groove of the housing.

According to the terminal device for electric equipment of the present invention, it is possible to reduce the size.

It is a perspective view which shows the terminal device for electric devices of one Embodiment. It is sectional drawing which shows the terminal device for electric devices. It is a perspective view which shows the terminal block of a prior art example.

Hereinafter, an embodiment of a terminal device for electrical equipment will be described with reference to the drawings. The terminal device for an electric device is attached to a case of an electric device such as an inverter or a motor mounted on a vehicle such as an electric vehicle or a hybrid vehicle, and used as a part of wiring for electrically connecting the two electric devices. It is done. As a combination of the two electric devices, a motor for driving driving (such as a three-phase motor) in an electric vehicle or the like and an inverter for driving the motor, or an electric power for the motor driving inverter and the inverter It is conceivable that the battery is a battery that supplies power.

As shown in FIG. 1, the terminal device 100 for electric equipment has the terminal block 10 with which the case (not shown) of electric equipments, such as an inverter and a motor, is mounted | worn. A connector (not shown) such as a wire harness is connected to the terminal block 10.

The terminal block 10 includes a housing 11, a terminal 12 (fitting portion) provided at a substantially central portion of the housing 11, and a seal member 13. The housing 11 is made of, for example, a synthetic resin.

The terminal 12 is provided with a number of male pins 12a. Each male pin 12a is made of a conductive metal material such as aluminum or copper. Each male pin 12a is formed in a column shape, for example. Each male pin 12a is fixed to the housing 11 so as to penetrate the housing 11 in the thickness direction. Each male pin 12a is formed so as to protrude from the end surface 11a of the housing 11 facing the connector (mating member) to the connector side. A large number of male pins 12a are arranged in a state of being separated from each other. These male pins 12a are fitted to the female terminals of the connector when the connector is fitted to the terminal block 10.

A housing groove 14 is formed in an annular shape around the terminal 12 on the end surface 11 a of the housing 11 so as to surround the terminal 12.
As shown in FIG. 2, the accommodation groove 14 is formed in, for example, a rectangular shape in sectional view. Concavities and convexities 15 are formed on the bottom surface of the housing groove 14. As for the unevenness | corrugation 15, many protrusions and concave stripes are formed continuously, for example. A large number of protrusions and recesses are formed, for example, so as to extend in the longitudinal direction (circumferential direction) of the accommodation groove 14.

A seal member 13 is provided in the accommodation groove 14. The accommodation groove 14 is filled with a liquid gasket (CuredketIn Place Gasket) as the seal member 13. The seal member 13 is formed in an annular shape so as to surround the terminal 12 (see FIG. 1), similarly to the housing groove 14. The seal member 13 seals (face seal) watertightly between the end surface 11a of the housing 11 and a connector (not shown) which is a mating member.

The seal member 13 is filled, for example, so as to rise slightly from the accommodation groove 14 in the opening direction (the connector side). The seal member 13 is bonded to the housing 11 in the accommodation groove 14. At this time, since the unevenness 15 is formed on the bottom surface of the receiving groove 14, the contact area between the sealing member 13 and the receiving groove 14 (housing 11) is increased, and the sealing member 13 is stably held in the receiving groove 14. Is done.

The surface of the seal member 13 is cured by being irradiated with ultraviolet rays. Thereby, the adhesive force of the surface of the seal member 13 is reduced, and unnecessary adhesion of foreign matters to the surface of the seal member 13 during transportation or assembly work is prevented.

Next, the manufacturing method of the terminal block 10 comprised as mentioned above is demonstrated.
First, a housing 11 having a terminal 12 and having an accommodation groove 14 is prepared. Next, a liquid gasket is applied into the accommodation groove 14 using a dispenser or the like to form the seal member 13. At this time, since the liquid gasket has higher adhesiveness and adhesiveness than conventional rubber packing or the like, the seal member 13 adheres well to the housing groove 14 (housing 11). Thereby, the sealing member 13 can be fixed to the housing 11 without providing a fixing pin or the like for fixing the sealing member 13 to the housing 11.

Subsequently, the surface of the seal member 13 is cured by irradiating the surface of the seal member 13 with ultraviolet rays. Thereby, the adhesive force of the surface of the sealing member 13 can be reduced.
When the connector (not shown) is attached to the terminal block 10 thus manufactured, the annular seal member 13 is sandwiched at the joint between the end surface of the terminal block 10 and the case edge of the connector, and the connector case Internal and external watertightness is ensured.

Then, the male pin 12a is fitted into the female pin of the connector, and the electric device to which the terminal block 10 is attached is connected to another electric device via the wire harness.
In the electric device terminal device 100 as described above, the following effects can be obtained.

(1) When a connector such as a wire harness is fitted to the terminal block 10, the male pin 12a of the terminal block 10 and the female pin of the connector are fitted and electrically connected in the connector case. And the edge of a connector closely_contact | adheres to the sealing member 13, and the water-tightness inside and outside the case of a connector can be ensured.

(2) A liquid gasket was filled in the accommodation groove 14 provided on the end surface 11 a of the housing 11 to form the seal member 13. Thereby, since the seal member 13 can be bonded to the housing 11, it is not necessary to provide the terminal block 10 with a fixing pin for holding the seal member 13 on the housing 11 on the outer peripheral side of the housing groove 14. Therefore, the terminal block 10 can be reduced in size, and the shape of the terminal block 10 can be simplified.

(3) Since the terminal block 10 can be reduced in size, the electrical equipment to which the terminal block 10 is attached and the connector attached to the terminal block 10 can be reduced in size.
(4) Since the irregularities 15 are formed on the bottom surface of the housing groove 14, the seal member 13 can be stably held in the housing groove 14.

(5) By irradiating the surface of the sealing member 13 (liquid gasket) filled in the housing groove 14 with ultraviolet rays, the surface of the sealing member 13 can be cured and unnecessary adhesion of foreign matters can be prevented.

(6) In the reference example in which the O-ring that is a general seal member is attached to the receiving groove 14, the elastic restoring force of the O-ring is used to suppress the O-ring from dropping from the housing 11. That is, the O-ring is attached to the receiving groove 14 in an elastically deformed state in order to generate an elastic restoring force. This elastic deformation state is a cause of deterioration of the O-ring and may shorten the service life of the O-ring. On the other hand, in a preferred example, when the liquid gasket is filled in the housing groove 14, the liquid gasket matches the shape of the housing groove 14 due to the fluidity of the liquid gasket. The sealing member 13 is formed by curing the liquid gasket in the accommodation groove 14. The seal member 13 is disposed in the receiving groove 14 in a natural state, that is, in a substantially inelastically deformed state, and adheres to the inner surface of the receiving groove 14 with a chemical adhesive force. Therefore, the sealing member 13 is superior in terms of the service life compared to a general sealing member such as an O-ring.

(7) The seal member 13 formed of a liquid gasket is chemically formed on the entire inner surface (for example, the side surface, the bottom surface, and the corner between the side surface and the bottom surface) of the accommodation groove 14 having a rectangular cross section as shown in FIG. It can be bonded with a good adhesive force. Due to the adhesion between the seal member 13 and the inner surface of the receiving groove 14, the dropout of the seal member 13 from the housing 11 is suppressed.

(8) In a reference example in which an O-ring that is a general sealing member is attached to the accommodation groove 14, tensile stress or compressive stress acts on the O-ring when the O-ring is attached. This tensile stress or compressive stress is a deterioration factor of the O-ring and may shorten the service life of the O-ring. On the other hand, in the embodiment, the seal member 13 is formed by curing the liquid gasket in the accommodation groove 14. When the seal member 13 is disposed in the housing groove 14, substantially no tensile stress or compressive stress acts on the seal member 13. Therefore, the use of the liquid gasket in forming the seal member 13 can contribute to the extension of the service life of the seal member 13.

In addition, you may change the said embodiment as follows.
-The unevenness | corrugation 15 of the bottom face of the accommodation groove | channel 14 may form many protrusions or many recessed parts continuously, for example besides a recess and a protrusion. Each protrusion or each recess may be formed in a hemispherical shape, for example.

The sealing member 13 made of a liquid gasket may be attached to the joint surface between the terminal block having various terminals other than the male pin or the male pin and the connector.
In the above embodiment, the sealing member 13 is provided around the terminal 12 of the terminal block 10 to ensure the watertightness of the joint portion between the end surface of the connector and the terminal block 10. For example, the seal member 13 may be formed so as to ensure the watertightness of the joint portion between the case (a counterpart member) of an electric device such as a motor or an inverter and the terminal block. In this case, for example, an accommodation groove is formed on the end surface of the housing 11 facing the case (that is, the end surface opposite to the end surface 11a), and the seal member 13 made of a liquid gasket is provided in the accommodation groove.

· It may be called a loop-shaped groove formed in the end face 11a. The terminal 12 in the embodiment may be referred to as a terminal array including a plurality of terminals (male and / or female) 12a. The liquid gasket of the embodiment has fluidity when the liquid gasket is filled in the accommodation groove 14. The liquid gasket after being cured in the accommodation groove 14, that is, the seal member 13, may be a rubber-like elastic body in an inelastically deformed state. The seal member 13 of the embodiment may be referred to as a loop-shaped waterproof seal member that adheres to the entire inner surface, preferably the entire inner surface (side surface and bottom surface) of the accommodation groove 14 with a chemical adhesive force.

The present disclosure encompasses the following implementation examples. The reference numerals of the constituent elements of the embodiment are given for the purpose of understanding but not limitation.
Some implementations provide a terminal block (10) that is attached to an electrical device. The terminal block (10) includes an end surface (11a), a loop-shaped groove (14) formed in the end surface (11a), and a plurality of terminals (12a) surrounded by the loop-shaped groove (14). ) And a loop-shaped waterproof seal member (13) that adheres to the entire inner surface of the loop-shaped groove (14) with a chemical adhesive force.

In some implementations, the groove (14) is a rectangular cross-sectional groove having a pair of opposite side surfaces and a bottom surface connecting the pair of side surfaces, and the waterproof seal member (13) is The groove (14) is bonded to the whole of the pair of side surfaces and the bottom surface with a chemical adhesive force.

In some implementations, the groove (14) has a corner between at least one of the pair of side surfaces and the bottom surface, and the waterproof seal member (13) is formed on the groove (14). The corner is bonded with chemical adhesive force.

In some implementations, the groove (14) has a roughened bottom surface, and the waterproof seal member (13) is chemically bonded to the roughened bottom surface of the groove (14). Adhere with.

In some implementation examples, the waterproof seal member (13) is disposed in the groove (14) in an inelastically deformed state.
It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the technical spirit thereof. For example, some of the parts described in the embodiment (or one or more aspects thereof) may be omitted, or some parts may be combined. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

DESCRIPTION OF SYMBOLS 10 ... Terminal block, 11 ... Housing, 11a ... End surface, 12 ... Terminal (fitting part), 12a ... Male pin, 13 ... Seal member (liquid gasket), 14 ... Housing groove, 15 ... Concavity and convexity.

Claims

A housing having a fitting portion that can be fitted to a mating member;
On the end surface facing the mating member side of the housing, a housing groove provided around the fitting portion,
An annular seal member that is provided in the housing groove and seals water tightly between the end surface of the housing and the mating member;
A terminal device for electrical equipment, wherein the housing groove is filled with a liquid gasket as the seal member.
The terminal device for electric equipment according to claim 1,
A terminal device for electrical equipment, wherein the bottom surface of the housing groove is provided with irregularities.
The terminal device for electric equipment according to claim 2,
A terminal device for electrical equipment, wherein the concave and convex portions are formed by continuously forming a large number of concave stripes and protrusions.
The terminal device for electric equipment according to claim 2,
A terminal device for electrical equipment, wherein a plurality of protrusions or a plurality of recesses are formed as the unevenness.
On the end surface facing the mating member side of the housing having a fitting portion that can be fitted to the mating member, an annular housing groove is provided around the fitting portion, and the housing groove is filled with a liquid gasket, A method for manufacturing a terminal device for an electrical device, wherein the surface of a liquid gasket is irradiated with ultraviolet rays to cure the surface.